Adjusting element for adjusting running function of wristwatch, has correction unit for correcting position of mobile stud to compensate involuntary deformations of spiral spring caused by temperature and/or oscillations of spring

摘要

The element has an automatic correction unit (10) i.e. bimetallic spring, for correcting a position of a mobile stud (P) in order to compensate involuntary deformations of a spiral spring (20) caused by temperature and/or oscillations of the spring. The stud is moved at each oscillation of the spring, where the correction unit is made of material i.e. metal, different from material of the spring. The material of the correction unit has expansion coefficient greater than the expansion coefficient of the spring.